Butene butylbenzene

Butylbenzene, see Butylbenzene f -Butylbenzene, see Isobutylbenzene n-Butylbenzene, see Butylbenzene s-Butylbenzene, see sec-Butylbenzene secondar/-Butylbenzene, see sec-Butylbenzene f-Butylbenzene, see ferf-Butylbenzene ferffar/ Butylbenzene, see ferf-Butylbenzene Butyl benzyl phthalate, see Benzyl butyl phthalate n-Butyl benzyl phthalate, see Benzyl butyl phthalate Butyl cellosolve, see 2-Butoxyethanol n-Butyl cellosolve, see 2-Butoxyethanol Butylene, see 1-Butene 1-Butylene, see 1-Butene... 

Cyclization of alkylbenzenes is much slower over silica-alumina than over the platinum-containing catalysts. To clarify the successive steps of cyclization, Csicsery performed a set of experiments with 4-phenyl-1-butene, a dehydrogenation product of -butylbenzene (28). 

Buten-2-one, AC8U Butyl alcohol, ADlj.1 sec-Butyl alcohol, ADL2 Butylamine, ADlj-5 sec-Butylamine. AD tert-Butylamine. ADVT tert-Butylbenzene, AS05... 

The work of Misono et al. (55) illustrates how acid strength distributions for silica-alumina catalyst can be deduced from catalytic titration measurements by use of an appropriate series of reactants. Surface concentration of amine, pyridine in this case, was adjusted by proper choice of amine partial pressure and desorption temperature while carrier gas flowed over the catalyst sample. At each level of chemisorbed pyridine, pulses of the reactants were passed over silica-alumina at 200°C and the products analyzed. The reactants were t-butylbenzene, diisobutylene, butenes, and f-butanol. It was concluded that skeletal transformations require the presence of very strong acid sites, that double-bond isomerization occurs over moderately strong acid sites, and that alcohol dehydration can occur on weak acid sites. 

Using the earlier value ignored by Pedley for the enthalpy of formation of 1-phenyl-l-butene but taken from our earlier archives, the very recent value for 1-phenylpropene94 and the archival values for propyl and butylbenzene, we find this reaction is thermoneutral to within 2 kJ moF1 ... 

In a three-necked flask equipped with reflux-condensor and magnetic stirrer, the olefin 2,3-dimethyl-2-butene 1 (3.24 g 38.5 mmol), solvent (20 mL), H2O2 (30 wt% aqueous 1.8 g 15.88 mmol) and an exact amount of internal standard 1,3,5-tri-rerf-butylbenzene were mixed and, under stirring, the solution was warmed to the required reaction temperature (Table 3). The catalyst (50 mg) was added at once (t = 0) and the reaction mixture was stirred vigorously during the whole reaction time. The formation of 3 was followed by taking samples of the reaction mixture followed by GC analysis. 

FIGURE 13.52 Typical chromatogram of sulfolane in BTX mixture extracted from Iragi Powerformate. Peak identifications are 1, n-pentane 2, cw-2-pentene 3, 2-methyl-2-butene 7, n-hexane 8, benzene 9, cyclohexane 10, 2,4-dimethylpentane 11, toluene 12, m- and p-xylene 13, o-xylene 14, n-propylbenzene 15, ferf-butylbenzene 16, isobutylbenzene 17, sulfolane. (Reprinted with permission from Reference 122, Journal of Chromatographic Science, Copyright 1979, Preston Publications, A Division of Preston Industries, Inc.)... 

This test method has been found applicable to the measurement of impurities such as cumene, 3-methyl-2-cyclopentene-l-one, n-propylbenzene, fert-buytlbenzene, sec-butylbenzene, cw-2-phenyl-2-butene, acetophenone, 1-phenyl-1-butene, 2-phenyl-2-propanol, and fra s-2-phenyl-2-butene, which are common to the manufacturing process of AMS. The limit of detection for these impurities is 0.01 wt %. 

---